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19.3 Operation Description
19.3.1 Control
The voltage detection circuit is controlled by voltage detection control registers.
19.3.2 Function
Enabling/disabling the voltage detection can be programmed by VDCR<VDEN>. After the voltage detec-
tion operation is enabled, When the supply voltage becomes lower than the detection voltage (4.1 ± 0.2V), a
voltage detection reset signal is generated.
19.3.2.1 Enabling/disabling the voltage detection operation
Setting VDCR<VDEN> to "1" enables the voltage detection operation. Setting it to "0" disables the op-
eration. VDCR<VDEN> is set to "1" immediately after a power-on reset or a reset by an external reset
input is released.
Note:
When the supply voltage is lower than the detection voltage (4.1 ± 0.2V), setting VDCR<VDEN> to
"1" generates reset signal at the time.
19.3.2.2 Selecting the detection voltage level
A detection voltage is 4.1 ± 0.2V.
tVDPW
TPORPW
tVDDT1
tVDDT2
tVDDT2
tVDDT2
TPORDT1
TPORDT2
TPORDT1
tVDDT1
Power voltage
VLTD detection voltage
Power-on reset
signal
Voltage detection
reset signal
POR release voltage (VPORH)
POR Detect voltage (VPORL)
Power-on counter
tPWUP
tPWUP
Internal reset signal
Figure 19-2 Voltage Detection Timing
TMPM3V6/M3V4
Page 419
2019-02-06
Summary of Contents for TMPM3V4
Page 1: ...32 Bit RISC Microcontroller TX03 Series TMPM3V6 M3V4 ...
Page 2: ... 2019 Toshiba Electronic Devices Storage Corporation ...
Page 7: ...Revision History Date Revision Comment 2019 02 06 1 First Release ...
Page 8: ......
Page 22: ...xiv ...
Page 52: ...TMPM3V6 M3V4 3 Processor Core 3 6 Exclusive access Page 30 2019 02 06 ...
Page 148: ...TMPM3V6 M3V4 7 Exceptions 7 6 Exception Interrupt Related Registers Page 126 2019 02 06 ...
Page 178: ...TMPM3V6 M3V4 9 Input Output port 9 2 Block Diagrams of Ports Page 156 2019 02 06 ...
Page 354: ...TMPM3V6 M3V4 14 Synchronous Serial Port SSP 14 6 Frame Format Page 332 2019 02 06 ...
Page 419: ...TMPM3V6 M3V4 Page 397 2019 02 06 ...
Page 462: ...TMPM3V6 M3V4 21 Watchdog Timer WDT 21 5 Control register Page 440 2019 02 06 ...
Page 544: ......